Nylon plastic Battery: 1x CR123A. 0 MM picatinny rail. So, please confirm whether the address i. Whether you really need the item before placing the order, in order to avoid unnecessary losses and trouble. Due to the lighting effect, there may be color difference in the pictures taken. Q: The logistics information shows that the package has been delivered, but I have not received it. What should I do? Q: What should I do if I have any confusion about the product or logistics? Please do not submit return requests or leave negative reviews at will.